Hairpin



b DBC- 23, 1930- H. M. ARMSTRONG 1,785,885

HAIRPIN Filed ynay 7, 1929 Patented Dec. 23, 1930- HARRY M. 'ARMSTRONGy OF CHICAGO,4 YILLINOIS,

HAIRPIN Application led Hay 7,

This invention relates to an improved hair pin especially adapted for feminine wear, and particular-l designed for use in either bobbed or long air.

l The invention has more particular reference to the so-called invisible type of hair pin and is more especially related to the species which includes a pair of resilient arms arranged in opposed relation to grapple the which is distinguishable in that it includes a P number of contrastingly different features.

One feature in the construction as shown is the curvate bend which joins the two arms together, which is cylindrical in cross section, and which functions to provide a comparatively sturdy normally expansible spring.

' An equally important advantage and feature is predicated upon 'a more dependable type of retaining clasp formed upon the free ends of said arms in a manner to provide an arcuate keeper hook and a complementa] detent for releasable cooperation therewith.

A Still further feature of construction is found in the provision of a short longitudinal bend formed in one of the arms and resembling a hump, this being meritorious in that it provides a finger grip to aid in releasing the engaged ends of the arms and also having slight longitudinal expansive action to insure maintenance of the retaining action in the clasp.

Other features and advantages will become more readily apparent from the following description and drawing.

In the drawing:

Figure 1 is a. perspective view of a hair pin constructedI in accordance with-the present invention.

Figure 2 is a side or edge elevation of the same showing the arms clasped together.

Figure 3is a top view, the section being 192s. senin No. 361,123.

taken approximately upon the plane of the line 3 3 of Figure 2. l In carrying out the invention I provide a single length of material which is bent between its ends to provide complemental hair '55 gripping arms 4 and 5 respectively. These are of flat metal.' That portion of the body. of material joining the arms together may be of cylindrical cross section and is shown as characterized by a curvate bend, functiono ing primarily as an expansion spring 6; The cylindrical cross sectional configuration icnders this portion comparatively sturdy in spite of the fact that it is` unusually small in dimension. In factit is sufficiently strong to .55 permit it to beretensioned from timeto time in order toinsure proper action of the hair The free end of the arm 5 is bent upon itself to form an arcuate retaining or keeper hook 7 .zo the extremity of which is beveled as at 8. The free end of the arm 4 possesses a slight longitudinal bow or is out-turned as at 9 and functions as a cletent for releasable engagement with the keeper hook. This arm is also bowed in an opposite direction as at 10 to form the so-called hump. As before stated this hump functions as a finger grip to aid in releasing the arm and also compensates for longitudinal expansion and contraction and 30 insures maintenance of the clamping or clasping action.

It is obvious that the pin operates by putting the open ends of the arms around the hair to be held, after which the ends are i pressed together and caused to snap into interlocking relation. To open the pin it isV simply necessary to place the thumb or finger against the hump 10 and to separate the arm 4 laterally with res ect to the arm 5 as 90 shown in dotted lines in igure 3. The normal spread or open position of the pin is rep resented in Figure 1 and the closed position in Figure 2.

The pin securely locks and will not fall out of the hair. It is easy to put in the hair, as the pin does not need to be held open as is the case with other types of pins. The spring is not continually weakened by pulling the arms or legs apart from continued usage.

The pin will hold the hair firmly and when it is opened may be removed without entangling in the hair.

As the salient features of the invention have been pointed out, it ais believed that a clear interpretation of the novelty ma be made lby persons skilled in the art to W ich the invention relates. Therefore, a. more lengthy description is regarded unnecessary.

Minor chan es in shape, size, and rearrangement of etails coming within the field of invention claimed'ma be resorted to in actual practice if desire .For instance, a curvate bend at 6 maynot be used in pins used for curlers or water-wavers, while the exact position of the hump 10 may be chan d. Moreover, additional humps may be useeif found necessary or desirable. It will be noted that when the pin is closed, the arms 4 and 5 will normally be firmly pressed together or into fiat intimate contact with each other. The arm 4 will yield sufiiciently, however, to pass over the hair which maybe positioned between the arms.

I claim:

As a new product of manufacture, a hair pin constructed from a single length of material, the intermediate portion being formed with a cylindrical cross section for allowing maximum retensioning effects, the end portions being formed of fiat rectangular cross section,` said intermediate portion being bentI upon itself to provide an expanding spring and to dispose said flat portion in spaced hairgripping relationship,said flat portion constituting arms, and the free ends thereof being constructed to provide a resilient snapclasp.

In testimony whereof I alix my signature.

HARRY M. ARMSTRONG. 

